Solve {l}{r=4}{x=5}{s=6+2+8r+7x}{text{Solvefor}ttext{where}}{t=s}

$$\left. \begin{array} { l } { r = 4 }\\ { x = 5 }\\ { s = 6 + 2 + 8 r + 7 x }\\ { \text{Solve for } t \text{ where} } \\ { t = s } \end{array} \right.$$

Solve for r, x, s, t

$$t=75$$

Solution Steps

Consider the third equation. Insert the known values of variables into the equation.

$$s=6+2+8\times 4+7\times 5$$

Do the multiplications.

$$s=6+2+32+35$$

Add 6 and 2 to get 8.

$$s=8+32+35$$

Add 8 and 32 to get 40.

$$s=40+35$$

Add 40 and 35 to get 75.

$$s=75$$

Consider the fourth equation. Insert the known values of variables into the equation.

$$t=75$$

The system is now solved.

$$r=4 x=5 s=75 t=75$$